Home / 13,770.06-19,003.14-8,103.78

Finding the Fourth Proportional to 13,770.06, 19,003.14 and 8,103.78

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Solution

The fourth proportional to 13,770.06, 19,003.14 and 8,103.78 is: 11,183.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,770.06 : 19,003.14 = 8,103.78 : x
  2. Step 2: Convert to fraction form
    13,770.06/19,003.14 = 8,103.78/x
  3. Step 3: Cross multiply
    13,770.06x = 19,003.14 × 8,103.78
  4. Step 4: Simplify right side
    13,770.06x = 153,997,265.87
  5. Step 5: Solve for x
    x = 153,997,265.87/13,770.06
  6. Step 6: Final answer
    x = 11,183.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.